My research has been dedicated to the study of rhizobia diversity, as well as the investigation of the molecular bases of stress tolerance in these bacteria and the genes that can influence the interaction with the host plant. More recently, I have been dealing with problems that originate from practice and that are limiting for the development of agricultural crops. I am involved in research related to the control of diseases caused by bacteria and also in the study of microbial activity in soil and its connection with the management of agroecosystems.